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Decrease write quorum for fully-replicated tables (buckets, API keys, ...) #919

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lx wants to merge 1 commit from hotfix/1.0.0-rc1-red-ftr-wquorum into next-v2
pull from: hotfix/1.0.0-rc1-red-ftr-wquorum
merge into: Deuxfleurs:next-v2
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lx commented 2025-01-04 19:24:09 +00:00
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Currently, the write quorum for fully-replicated tables (buckets, access keys, etc) is n-1 nodes, so we tolerate a single node failure. Unfortunately this means that if a whole zone is down that contains several nodes, admin operations (creating buckets, etc) stop working. This is not normal as we expect Garage to continue operating normally when a whole dc is down.

This fixes the issue by reducing the write quorum to a majority of nodes. This patch is used in production at Deuxfleurs.

Currently, the write quorum for fully-replicated tables (buckets, access keys, etc) is n-1 nodes, so we tolerate a single node failure. Unfortunately this means that if a whole zone is down that contains several nodes, admin operations (creating buckets, etc) stop working. This is not normal as we expect Garage to continue operating normally when a whole dc is down. This fixes the issue by reducing the write quorum to a majority of nodes. This patch is used in production at Deuxfleurs.
lx added 1 commit 2025-01-04 19:24:09 +00:00
decrease write quorum
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lx commented 2025-01-04 19:53:39 +00:00
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TODO: what are the consistency implications of this change?

TODO: what are the consistency implications of this change?
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From your project repository, check out a new branch and test the changes.
git fetch -u origin hotfix/1.0.0-rc1-red-ftr-wquorum:hotfix/1.0.0-rc1-red-ftr-wquorum
git checkout hotfix/1.0.0-rc1-red-ftr-wquorum

Merge

Merge the changes and update on Forgejo.
git checkout next-v2
git merge --no-ff hotfix/1.0.0-rc1-red-ftr-wquorum
git checkout hotfix/1.0.0-rc1-red-ftr-wquorum
git rebase next-v2
git checkout next-v2
git merge --ff-only hotfix/1.0.0-rc1-red-ftr-wquorum
git checkout hotfix/1.0.0-rc1-red-ftr-wquorum
git rebase next-v2
git checkout next-v2
git merge --no-ff hotfix/1.0.0-rc1-red-ftr-wquorum
git checkout next-v2
git merge --squash hotfix/1.0.0-rc1-red-ftr-wquorum
git checkout next-v2
git merge --ff-only hotfix/1.0.0-rc1-red-ftr-wquorum
git checkout next-v2
git merge hotfix/1.0.0-rc1-red-ftr-wquorum
git push origin next-v2
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Reference: Deuxfleurs/garage#919
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